1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
raketka [301]
2 years ago
5

I think you use pie times diameter

Mathematics
1 answer:
laiz [17]2 years ago
5 0

Answer: Inner Circle Circumference = 27.018 feet

Outer Circle Circumference ≈ 49.637 feet

Step-by-step explanation: You can use the formula for the circumference of a circle (πd). From here, we can plug 8.6 feet for the inner circle's diameter into the formula. C ≈ 27.018 ft for the inner circle.

Diameters work in any way no matter how you turn the line, as long as the line touches both ends of the circle. Now imagine the 8.6 feet diameter lined up with the 3.6 feet given line. You have a total of 12.2 feet, but this is not the diameter. Since this is a circle, it is safe to assume the 3.6 feet line can be rotated between the inner circle and the border of the outer circle and remain the same length. Therefore, the other end is also 3.6 feet. Totaling up the diameter to 15.8 feet. Now plug this into the formula. C ≈ 49.637 feet of the outer circle.

You might be interested in
An easy question for people who want points<br> What is the MISSING NUMBER in the pattern?
Vika [28.1K]

Answer:

12 5/12 i think

Step-by-step explanation:

4 0
2 years ago
Read 2 more answers
Help me with these math questions........ WITH SCREENIES
Nutka1998 [239]

Answer: 6.3093

<u>Step-by-step explanation:</u>

3^{\frac{x}{5}} = 4

ln3^{\frac{x}{5}} = ln4

\frac{x}{5} ln3 = ln4

xln3 = 5ln4

x = \frac{5ln4}{ln3}

x = 6.3093

************************************************************

Answer: 5, 3, \frac{1}{5}, D

<u>Step-by-step explanation:</u>

a) x ≤ 0 so, f(-5) = | -5 | = 5

   x ≤ 0 so, f(-3) = | -3 | = 3

   x > 0 so, f(5) = \frac{1}{5}

b) graph D

************************************************************

Answer: \frac{\pi}{12}

<u>Step-by-step explanation:</u>

 \frac{25\pi}{12} - \frac{2\pi}{}

=  \frac{25\pi}{12} - \frac{24\pi}{12}

=  \frac{\pi}{12}

7 0
3 years ago
Use the normal distribution and the given sample results to complete the test of the given hypotheses. Assume the results come f
AlladinOne [14]

Answer:

z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43  

Now we can calculate the p value with the following probability:

p_v =P(z>2.43)=0.0075 \approx 0.008  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

Step-by-step explanation:

Data given and notation

n=75 represent the random sample taken

\hat p=0.64 estimated proportion of interest

p_o=0.5 is the value that we want to test

\alpha=0.05 represent the significance level

Confidence=95% or 0.95

z would represent the statistic

p_v represent the p value

System of hypothesis

We want to verify if the true proportion is higher than 0.5:  

Null hypothesis:p =0.5  

Alternative hypothesis:p > 0.5  

The statistic is given by:

z=\frac{\hat p -p_o}{\sqrt{\frac{p_o (1-p_o)}{n}}} (1)  

Replacing the info given we got:

z=\frac{0.64 -0.5}{\sqrt{\frac{0.5(1-0.5)}{75}}}=2.43  

Now we can calculate the p value with the following probability:

p_v =P(z>2.43)=0.0075 \approx 0.008  

Since the p value is lower than the significance level we have enough evidence to reject the null hypothesis and we can conclude that the true proportion for this case is higher than 0.5

7 0
3 years ago
A cross-country travels 20 kilometers before she realizes that she has to cover at least 75 kilometers in order to qualify for t
valina [46]
It will be 7 hour and 30 min
5 0
3 years ago
Read 2 more answers
7. Kayce made $16 to $28 dollars per horse for grooming them. What is a reasonable amount of money she made if she groomed 18 ho
juin [17]
The answer should be h.380
5 0
3 years ago
Other questions:
  • What is the degree of the sin of .19
    8·1 answer
  • Which of the following is a list of all the factors of 24? A. 1, 2, 3, 4, 5, 6, 8, 12, 24 B. 1, 2, 3, 4, 6, 8, 12, 24 C. 2 × 2 ×
    6·1 answer
  • Find the area of the entire rectangle?
    15·1 answer
  • How do I write 684297 in word form?
    11·1 answer
  • IXL: will give Brainlest and thanks!!!
    12·1 answer
  • How many significant numbers are in 15,000
    9·2 answers
  • PLEASE HELP MATHS. What is the true solution to 2 In 4x= 2In 8?​
    11·1 answer
  • Written as a rate, 100 miles in 5 hours would be ____ miles per hour.
    12·1 answer
  • Please fix the question and help me do it the right way
    14·1 answer
  • Find x.<br> Do not round your answer<br> 12 cm<br> 6 cm<br> 5 cm
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!